In pursuit of Asirpa's whereabouts, Sugimoto, Tanigaki, and Cikapasi team up with Seventh Division members Koito and Tsukishima, journeying into the icy lands of Karafuto. Unaware of the events at Abashiri Prison, Asirpa, troubled by her father's past, follows Kiroranke to delve into his history. Little does she know, Kiroranke and sniper Ogata have ulterior motives. With factions seeking the Ainu gold map, it becomes clear that Asirpa holds the key. As danger looms, Sugimoto races to shield Asirpa from those who seek to exploit her innocence.